Solar module mounting bracket assemblies

ABSTRACT

A solar module mounting bracket assembly includes a rail configured to support a solar module thereon, and a pair of braces. The braces each have a first end portion movably coupled to the rail. The braces are movable relative to the rail between a collapsed configuration and an expanded configuration. In the expanded configuration, the braces cooperatively define a channel dimensioned for receipt of a frame member.

BACKGROUND 1. Technical Field

The present disclosure relates generally to mounting brackets. Morespecifically, the present disclosure relates to mounting brackets forcoupling solar modules to a framework.

2. Background of Related Art

Solar mounting systems are provided to support and couple an array ofone or more photovoltaic (“PV”) modules to a framework, such as, forexample, a plurality of parallel-oriented, rotatable torque tubes. Thesolar mounting systems are designed to maintain the PV modules in afixed position relative to the torque tube while the torque tube isrotating during solar tracking.

Solar mounting systems can add significant cost to a solar power systemfor at least two reasons. First, the components themselves are expensiveto manufacture, ship, and install. Second, installation and operationcan be expensive because they require time and skilled operators toconduct quality control measures in the field. Therefore, there is aneed for PV mounting systems that are easier and cheaper to package,ship, and install.

SUMMARY

In one aspect of the present disclosure, a solar module mounting bracketassembly is provided. The solar module mounting bracket assemblyincludes a rail configured to support a solar module thereon, and a pairof braces each having a first end portion movably coupled to the rail.The braces are movable relative to the rail between a collapsedconfiguration and an expanded configuration. In the expandedconfiguration, the braces cooperatively define a channel dimensioned forreceipt of a frame member.

In aspects, the braces may be parallel with the rail in the collapsedconfiguration, and perpendicular to the rail in the expandedconfiguration.

In aspects, the solar module mounting bracket assembly may assume asubstantially linear shape when the braces are in the collapsedconfiguration. In further aspects, the solar module mounting bracketassembly may assume a substantially triangular shape when the braces arein the expanded configuration.

In aspects, the solar module mounting bracket assembly may furtherinclude a fastener configured to attach to a second end portion of eachof the braces to fix the braces in the expanded configuration.

In aspects, the solar module mounting bracket assembly may furtherinclude a pair of truss arms. Each of the truss arms may include a firstend portion movably coupled to a respective second end portion of thepair of braces, and a second end portion slidably coupled to arespective first and second end portion of the rail.

In aspects, the truss arms may be configured to move relative to therail and the braces between a collapsed configuration and an expandedconfiguration. In the collapsed configuration, the truss arms may beparallel with the rail and the pair of braces, and in expandedconfiguration, the truss arms may extend perpendicularly relative to therail.

In aspects, the second end portion of each of the truss arms may beconfigured to slide away from a central portion of the rail as the pairof truss arms move toward the collapsed configuration.

In aspects, the second end portion of each of the truss arms may movealong the rail from an inward position to an outward position. In theinward position, the truss arms may assume the expanded configuration,and in the outward position, the truss arms may assume the collapsedconfiguration.

In aspects, each of the first and second end portions of the rail maydefine a track through which the respective second end portion of thetruss arms slides.

In aspects, the solar module mounting bracket assembly may furtherinclude a fastener assembly coupled to the second end portion of a firstof the truss arms. The fastener assembly may be configured toselectively fix the second end portion of the first truss arm in aposition on the track of the rail.

In aspects, the fastener assembly may include a pair of washers disposedon opposite sides of the rail, and a fastener coupling the pair ofwashers to one another. The fastener may be configured to adjust adistance between the washers. At least one of the washers has a pair offirst and second tabs extending therefrom. The first and second tabs maybe configured for receipt in a corresponding slot defined in the rail.

In aspects, the first washer may further include a third tab extendingtherefrom. The third tab may be disposed in the track of the rail toguide the fastener assembly through the track.

In aspects, the solar module mounting bracket assembly may furtherinclude a protuberance protruding downwardly relative to an underside ofthe rail. The protuberance may extend into the channel defined by thebraces when the braces are in the expanded configuration.

In aspects, each of the braces may have a concave inner surface, suchthat the channel cooperatively defined by the first and second braceshas a circular shape.

In aspects, the solar module mounting bracket assembly may furtherinclude a plurality of coupling devices disposed on an upper side of therail. The coupling devices may be configured to fix a solar module tothe rail.

In further aspects of the present disclosure, a PV module mountingbracket assembly is provided that includes a rail, a pair of braces, afastener, and a pair of truss arms. The rail is configured to support aPV module thereon and has a first end portion, a central portion, and asecond end portion. Each of the braces includes a first end portionmovably coupled to the central portion of the rail, and a second endportion. The braces are movable relative to the rail between a collapsedconfiguration and an expanded configuration. In the collapsedconfiguration, the braces are parallel with the rail, and in theexpanded configuration, the braces are perpendicular to the rail andcooperatively define a channel dimensioned for receipt of a framemember. The fastener is configured to attach to the second end portionof each of the braces to fix the braces in the expanded configuration.Each of the truss arms includes a first end portion coupled to therespective second end portion of the pair of braces, and a second endportion slidably coupled to the respective first and second end portionsof the rail.

Further details, advantages, and aspects of exemplary embodiments of thepresent disclosure are described in more detail below with reference tothe appended figures.

As used herein, the terms parallel and perpendicular are understood toinclude relative configurations that are substantially parallel andsubstantially perpendicular up to about + or −30 degrees from trueparallel and true perpendicular.

BRIEF DESCRIPTION OF THE DRAWINGS

Embodiments of the present disclosure are described herein withreference to the accompanying drawings, wherein:

FIG. 1 is a top view of a solar power system in accordance with anexemplary embodiment of the present disclosure;

FIG. 2A is a perspective view, with parts separated, of an exemplaryembodiment of a solar modular mounting bracket assembly of the solarpower system of FIG. 1;

FIG. 2B is a top, perspective view of an alternative embodiment of acoupling device for coupling a solar module to a rail;

FIG. 2C is a bottom, perspective view of the coupling device of FIG. 2B;

FIG. 3 is an enlarged side view of the mounting bracket assembly of FIG.2A shown in an expanded or in-use configuration;

FIG. 4 is an enlarged side view of the mounting bracket assembly of FIG.2A shown in a collapsed or shipping configuration;

FIG. 5 is a side view, with parts separated, of the mounting bracketassembly of FIG. 2A shown in the expanded configuration;

FIG. 5A is a top, perspective view of an alternative embodiment of acoupling nut illustrated in an attached state and a detached state;

FIG. 6 is a side view of the mounting bracket assembly of FIG. 2A shownin the collapsed configuration;

FIG. 7A is an enlarged view of the area of detail designated “7A” inFIG. 5, illustrating a fastener assembly disposed in an inward positionrelative to a rail of the mounting bracket assembly;

FIG. 7B is a cross-section, taken along line “7B” in FIG. 7A, of thefastener assembly coupled to the rail of the mounting bracket assembly;

FIG. 8A is an enlarged view of the area of detail designated “8A” inFIG. 6, illustrating the fastener assembly disposed in an outwardposition relative to the rail of the mounting bracket assembly;

FIG. 8B is a cross-section, taken alone line “8B” in FIG. 8A, of thefastener assembly coupled to the rail of the mounting bracket assembly;

FIG. 9A is top perspective view of the mounting bracket assembly shownin the collapsed configuration and supported on a torque tube of thesolar power system of FIG. 1;

FIG. 9B is top perspective view of the mounting bracket assembly shownin the expanded configuration and supported on the torque tube of thesolar power system of FIG. 1;

FIG. 9C is an enlarged side view of the mounting bracket assembly shownsecured to the torque tube;

FIG. 9D is a bottom, perspective view of the mounting bracket assemblyattached to an underside of an alternative embodiment of a solar modulehaving a wire management clip;

FIG. 9E is a top, perspective view of the solar module of FIG. 9D shownin phantom, thereby revealing the wire management clip; and

FIG. 10 is a side cross-sectional view of an alternative embodiment of arail of the mounting bracket assembly.

DETAILED DESCRIPTION

Embodiments of the presently disclosed solar module mounting bracketassemblies and methods of installing the same are described in detailwith reference to the drawings, in which like reference numeralsdesignate identical or corresponding elements in each of the severalviews. As described herein, the term “solar module” refers to anysuitable solar panel or array of solar panels that convert energy fromthe sun into usable energy.

The present disclosure, in accordance with various example embodimentsthereof, relates to a mounting bracket assembly for coupling one or moresolar modules (e.g., PV modules) to a framework. The mounting bracketassembly has a rail for affixing the one or more PV modules thereon, anda pair of braces pivotably coupled to the rail. The braces are movablerelative to the rail from a collapsed configuration to an expandedconfiguration. The collapsed configuration reduces the overall footprintof the mounting bracket assembly, thereby reducing packaging andshipping costs. In the expanded configuration, the braces grasp theframework (e.g., a torque tube) to fix the mounting bracket assemblyand, in turn, the one or more PV modules, to the framework. The mountingbracket assembly may also include a pair of truss arms that couple tothe respective braces to provide support for the braces. The truss armsare configured to collapse with the braces. These and further details ofthe mounting bracket assemblies will be described below.

With reference to FIG. 1, a solar power system 10 is illustrated andgenerally includes an array of solar modules 12 (e.g., PV modules), aframework, such as, for example, a torque tube 14, and a mountingbracket assembly 100 for coupling the array of PV modules 12 to thetorque tube 14. Each of the mounting bracket assemblies 100 may beoriented perpendicularly relative to the torque tube 14 and extendcrosswise under each of the PV modules 12. The torque tube 14 isrotatable about an axis to adjust an angular orientation of the PVmodules 12 relative to the sun.

While not illustrated, the system 10 may include more than one torquetube 14, connected end to end and wherein each set of end to endconnected torque tubes 14 are arranged in a parallel orientation withone another. Each torque tube 14 may have an array of PV modules 12affixed thereto via a plurality of mounting bracket assemblies 100. Inembodiments, two mounting bracket assemblies 100 may be utilized forcoupling four PV modules 12 to the torque tube 14. It is contemplatedthat any suitable number of mounting bracket assemblies 100 are employedto affix any suitable number of PV modules 12 to the torque tube 14.

With reference to FIGS. 2A-9C, an exemplary mounting bracket assembly100 is illustrated and generally includes an elongated rail 102, a pairof first and second braces 104, 106 movably coupled to the rail 102, anda pair of first and second truss arms 108, 110 for supporting the firstand second braces 104, 106 relative to the rail 102. The rail 102 has agenerally rectangular shape and a U-shaped cross-sectionalconfiguration. The rail 102 includes an upper wall 112, and a pair oflateral side walls 114, 116 extending perpendicularly downward from theupper wall 112, thus forming a U-shaped channel 118 in an underside ofthe rail 102. The rail 102 has opposing first and second end portions102 a, 102 b and defines a longitudinal axis “X” therebetween. It iscontemplated that the rail 102 may assume any suitable shape, such assquare, rounded, or the like.

With specific reference to FIG. 2A, the rail 102 has a plurality ofcoupling devices 120 disposed on the upper wall 112 of the rail 102. Thecoupling devices 120 are spaced from one another along the longitudinalaxis “X” of the rail 102. Each of the coupling devices 120 includes asupport member 122 that is fixed to the upper wall 112 of the rail 102,and a clip 124 detachably coupled to the support member 122. The supportmember 122 may be fabricated from a relatively pliable material, suchas, for example, an elastomer, to provide a forgiving surface on which aPV module 12 is to be seated. The support member 122 defines an opening126 therethrough dimensioned for receipt of a shroud 128. The shroud 128extends upwardly from the upper wall 112 of the rail 102 and is fixedthereto. The clip 124 of the coupling device 120 includes a plate member130 and a fastener 132 (e.g., a screw) extending downwardly therefrom.The fastener 132 of the clip 124 is configured to be coupled (e.g., viathreaded engagement or friction-fit engagement) with the shroud 128.

FIG. 2B depicts a further aspect of the present disclosure related tothe coupling device 120. Specifically this aspect employs a pad 125which supports the support member 122 and is received on the shroud 128to attach the pad 125 to the rail 102. In embodiments, the pad 125 mayhave a plurality of tabs 127 configured to clip the pad 125 to the upperwall 112 of the rail 102. It is contemplated that the pad 125 may haveany suitable fastening mechanism for attaching to the rail 102, such as,for example, adhesives. The pad 125 allows for reduction of the width ofthe rail 102 while providing an adequate bearing surface for solarmodules 12. The pad 125 may be formed of sheet metal and placed underthe support member 122. The increased width of the pad 125 compared tothe rail 102 width allows the rail 102 to provide increased support forthe module 12 while limiting the size of the rail 102 and thus reducesweight and potential costs. FIG. 2C depicts a bottom perspective view ofthe coupling device 120 attached to a rail 102 and showing the pad 125and support member 122 extending over the edges of the rail 102.

During assembly, with two longitudinal sides of a pair of adjacent PVmodules 12 (FIG. 1) positioned on the support member 122 of the couplingdevice 120, the fastener 132 of the clip 124 is positioned through theopening 126 of the support member 122 and threadedly coupled to athreaded inner surface of the shroud 128. In embodiments, the fastener132 of the clip 124 may be fastened to the shroud 128 via a friction-fitengagement. The plate member 130 of the clip 124 is approximated towardsthe support member 122 (e.g., via rotation of the fastener 132) untilthe PV modules 12 are captured between the plate member 130 of the clip124 and the support member 122.

It is contemplated that the rail 102 may also have coupling devices inthe form of flexible, hook-shaped members 134 disposed on opposing firstand second end portions 102 a, 102 b of the rail 102. The hook-shapedmembers 134 are configured to snap over an end of a PV module 12 toresist movement of the PV module 12 along the longitudinal axis “X” ofthe rail 102.

The first end portion 102 a of the rail 102 defines a first pair oflinear tracks 136 in the opposing lateral side walls 114, 116 of therail 102 (only the track 136 in the first side wall 114 is illustratedin FIG. 2A). Similarly, the second end portion 102 b of the rail 102defines a second pair of linear tracks 138 in the opposing lateral sidewalls 114, 116 of the rail 102 (only the track 138 in the first sidewall 114 is illustrated in FIG. 2A). In embodiments, the tracks 136, 138may be curved or assume any other suitable shape. As will be describedin further detail below, the first pair of tracks 136 permits for theslidable coupling of the first truss arm 108 to the rail 102, and thesecond pair of tracks 138 permits for the slidable coupling of thesecond truss arm 110 to the rail 102.

As best shown in FIGS. 3 and 4, the rail 102 has a center portion 102 cdisposed between the first and second end portions 102 a, 102 b of therail 102. The center portion 102 c of the rail 102 may have an insert140 disposed within the channel 118 of the rail 102 and between the pairof braces 104, 106. The insert 140 has a concave inner surface 142 and aprotuberance 144 extending downwardly from the inner surface 142thereof. The protuberance 144 may have a rounded configuration (e.g.,dome-shaped) and be fabricated from a pliable material, such as, forexample, an elastomer. In some embodiments, the protuberance 144 may befabricated from any suitable material, such as, for example, a metal.The protuberance 144 is configured to enhance the frictional engagementbetween the mounting bracket assembly 100 and the torque tube (FIG. 1)when the torque tube 100 is captured between the pair of braces 104,106, as will be described.

With reference to FIGS. 2A-6, each of the first and second braces 104,106 has a first end portion 104 a, 106 a and a second end portion 104 b,106 b. The first end portion 104 a, 106 a of each of the braces 104, 106is coupled to the center portion 102 c of the rail via a fastener, suchas, for example, a nut and bolt assembly. The first end portion 104 a,106 a of the braces 104, 106 is pivotable relative to the rail 102between an in-use or expanded configuration, as shown in FIG. 3, and ashipping or collapsed configuration, as shown in FIG. 4. In the expandedconfiguration, the braces 104, 106 are disposed in perpendicularrelation to the longitudinal axis “X” of the rail 102. In the collapsedconfiguration, the braces 104, 106 are coaxial with the longitudinalaxis “X” of the rail 102, whereby the mounting bracket assembly 100 hasa substantially reduced overall profile.

The braces 104, 106 may each have a concave inner surface 146, 148,respectively. When the braces 104, 106 are in the expandedconfiguration, the concave inner surfaces 146 of the braces 104, 106 andthe concave inner surface 142 of the insert 140 cooperatively define acircular channel 150 dimensioned for receipt of the torque tube 14 (FIG.1). The braces 104, 106 each have a generally U-shaped transversecross-sectional configuration and define a longitudinally-extendingU-shaped channel 152, 154, respectively. The U-shaped channel 152, 154of each of the braces 104, 106 is configured to receive the lateral sidewalls 114, 116 of the rail 102 upon the braces 104, 106 moving towardthe collapsed configuration.

The mounting bracket assembly 100 further includes a main fastener 156,such as, for example, a nut 156 a and a bolt 156 b, interconnecting thesecond portions 104 b, 106 b of the first and second braces 104, 106.The main fastener 156 is configured to extend through an opening 158,160 (FIG. 4) defined in the respective second end portions 104 b, 106 bof the braces 104, 106. The main fastener 156 is configured toselectively lock the braces 104, 106 in the expanded configuration andclose the circular channel 150. An approximation of the nut 156 a andbolt 156 b drives the second end portions 104 b, 106 b of the braces104, 106 closer to one another to constrict the circular channel 150about the torque tube 14.

Depicted in FIG. 5A is a nut 157 that may be used with the presentdisclosure. Specifically, the nut 157 is a break-away sheer nut and maybe used in place of nut 156 a. The break-away sheer nut 157 may bepre-installed on the bolt 156 b. To install to a proper torque setting,all that an installer must do is apply torque to the nut 157 until thehex head 157 a separates from the body 157 b. The stress-concentrationof the break-away sheer nut 157 can be sized such that separation of thehex head 157 a occurs upon application of a predetermined pressure tothe bolt 156 a that will hold the bracket assembly 100 on the torquetube 14. The hex head 157 a can then be discarded, but importantly forfield installations, proper torque application can be assured withoutrequiring any special tools or fear of over-torqueing of the nut 157 athat could result in damage to the torque tube 14 or other components.

With continued reference to FIGS. 2A-6, as briefly mentioned above, themounting bracket assembly 100 further includes a pair of first andsecond truss arms 108, 110 that provide support for the braces 104, 106when in the expanded configuration. Each of the truss arms 108, 110 hasa first end portion 108 a, 110 a and a second end portion 108 b, 110 b.The first end portion 108 a, 110 a of each of the truss arms 108, 110 iscoupled to the respective second end portion 104 b, 106 b of the braces104, 106 via a fastener, such as, for example, a nut and bolt assembly.The first end portion 108 a, 110 a of each of the truss arms 108, 110may be disposed within the U-shaped channel 152, 154 of the respectivebrace 104, 106.

The first end portion 108 a, 110 a of each of the truss arms 108, 110 ispivotable relative to the respective brace 104, 106 between an in-use orexpanded configuration, as shown in FIG. 3, and a shipping or collapsedconfiguration, as shown in FIG. 4. In the expanded configuration, thetruss arms 108, 110 are disposed in oblique or transverse relation tothe longitudinal axis “X” of the rail 102 and the braces 104, 106, thusgiving the mounting bracket assembly 100 a generally triangular shape orA-shape. In the collapsed configuration, the truss arms 108, 110 aredisposed in parallel relation to the rail 102 and the braces 104, 106,thus giving the mounting bracket assembly 100 a substantially linearconfiguration.

With reference to FIGS. 2A, 5, and 6, the second end portion 108 b, 110b of each of the truss arms 108, 110 is slidably coupled to therespective first and second end portions 102 a, 102 b of the rail 102.In particular, the second end portion 108 b, 110 b of each of the trussarms 108, 110 is configured to slide along the respective track 136, 138of the rail 102 between an inward position (FIG. 5), and an outwardposition (FIG. 6). When the second end portion 108 b, 110 b of each ofthe truss arms 108, 110 is in the inward position, the truss arms 108,110 and the braces 104, 106 are in their respective expandedconfigurations, and when the second end portions 108 b, 110 b of each ofthe truss arms 108, 110 is in the outward position, the truss arms 108,110 and the braces 104, 106 are in their respective collapsedconfigurations.

With reference to FIGS. 5-8B, the mounting bracket assembly 100 furtherincludes a pair of first and second fastener assemblies 170, 172. Thefirst fastener assembly 170 slidably couples the second end portion 108b of the first truss arm 108 to the tracks 136 of the first end portion102 a of the rail 100, and the second fastener assembly 172 slidablycouples the second end portion 110 b of the second truss arm 110 to thetracks 138 of the second end portion 102 b of the rail 100. The fastenerassemblies 170, 172 are configured to selectively lock the second endportion 108 b, 110 b of each of the respective truss arms 108, 110 inthe inward position. Due to the first and second fastener assemblies170, 172 being the same or substantially similar, only the firstfastener assembly 170 will be described in detail herein.

With specific reference to FIGS. 7A-8B, the first fastener assembly 170includes a pair of washers 174, 176 and a fastener 178, such as, forexample, a nut and a bolt coupling the pair of washers 174, 176 to oneanother. The washers 174, 176 are disposed on the respective first andsecond lateral sidewalls 114, 116 of the rail 102, and the fastener 178extends transversely through the pair of tracks 136 in the first andsecond lateral sidewalls 114, 116 of the first end portion 102 a of therail 102. The fastener 178 also extends through the second end portion108 b of the first truss arm 108, thereby slidably coupling the secondend portion 108 b of the truss arm 108 to the first end portion 102 a ofthe rail 102.

The washers 174, 176 of the fastener assembly 170 each include a pair offirst and second flanges or tabs 174 a, 174 b and 176 a, 176 b extendingperpendicularly from an outer periphery thereof. The first and secondtabs 174 a, 174 b and 176 a, 176 b of each of the washers 174, 176 aredisposed on opposite sides of the respective washer 174, 176. The tabs174 a, 174 b and 176 a, 176 b of the washers 174, 176 may have a squaredconfiguration and be dimensioned for receipt in a pair of correspondingslots 180, 180 b (FIG. 8A) defined in the first end portion 102 a of therail 102. The slots 180 a, 180 b are disposed on opposite longitudinalsides of the track 136 and at an inward end of the track 136.

Upon moving the fastener assembly 170 toward the inward position, asshown in FIG. 7A, the tabs 174 a, 174 b and 176 a, 176 b of the washers174, 176 are aligned with the corresponding slots 180 a, 180 b in thefirst end portion 102 a of the rail 102. An actuation of the fastener178 drives an approximation of the washers 174, 176, whereby the tabs174 a, 174 b of the washers 174, 176 are received in the correspondingslots 180 a, 180 b in the rail 102 to fix or lock the fastener assembly170 to the rail 102 and, in turn, lock the second end portion 108 b ofthe first truss arm 108 in the inward position.

The washers 174, 176 may further include a third flange or tab 174 cextending perpendicularly from the outer periphery thereof. The thirdtab 174 c is received in the track 136 of the first end portion 102 a ofthe rail 102 to guide the fastener assembly 170 along the track 136. Acompression tube 179 (FIG. 7B) may be provided that extends between thewalls 114, 116 of the rail 102 and which has the fastener 178 extendingtherethrough. The compression tube 179 prevents the walls 114, 116 ofthe rail 102 from collapsing during a tightening of the fastener 178.

With respect to the compression tubes 179 depicted in FIGS. 7B and 8B,an aspect of the present disclosure relating to the capturing of thecompression tube 179 in the truss arms 108 is shown. Specifically,following formation of the hole in the truss arms 108 for receiving thefastener 178, the compression tube 179 can be placed opposite the hole,and a hydraulic press may be employed to flare the edges of the holeinto the compression tube 179, thereby pressing the edges that definethe hole around and onto the inner periphery of the compression tube179. The result is two-fold. First, the flared hole is larger than whatwas originally bored in the truss arm 108 allowing for the passage of afastener 178 that has a larger diameter than the originally formed hole.The second result is that the compression tube 179 is permanentlycaptured in the truss arm 108 allowing for ease of installation in thefield as the installer is no longer required to align the bore of thecompression tube 179 with the holes in the truss arms 108.

During assembly, with reference to FIG. 9A, the mounting bracketassembly 100, while in the collapsed or shipping configuration, ispositioned over the torque tube 14 of the solar power system 1 (FIG. 1)with the center portion 102 c of the rail 102 overlapping the torquetube 14. In this position, the protuberance 144 (FIG. 3) of the insert140 abuts the outer surface of the torque tube 14 and the braces 104,106 are disposed on opposite sides of the torque tube 14. As shown inFIG. 9B, the braces 104, 106 of the mounting bracket assembly 100 arerotated outwardly from the rail 102, in the direction indicted by arrow“A” in FIG. 9B, toward the expanded configuration. Rotation of thebraces 104, 106 causes the first end portion 108 a, 110 a of each of thetruss arms 108, 110 to rotate relative to the respective second endportions 104 b, 106 b of the braces 104, 106. A rotation of the braces104, 106 is continued until the inner surfaces 146, 148 of the braces104, 106 capture the torque tube 14 therebetween, as shown in FIG. 9C.

With the torque tube 14 captured within the channel 150 defined by theinsert 140 and the braces 104, 106, the main fastener 156 is actuated toapproximate the second end portions 104 b, 106 b of the braces 104, 106,whereby the braces 104, 106 exert an upwardly-oriented force on thetorque tube 14 to drive the torque tube 14 into engagement with theprotuberance 144 of the insert 140. In embodiments, the concave innersurfaces 146, 148 of the braces 104, 106 may be coated or lined with asimilar material as the protuberance 144 to strengthen the frictionalengagement with the torque tube 14.

As described above, when the braces 104, 106 enter the expandedconfiguration, the second end portion 108 b, 110 b of each of the trussarms 108, 110 is simultaneously moved to the inward position on therespective track 136, 138 of the rail 102. With the second end portions108 b, 110 b of the truss arms 108, 110 in the inward position, thefirst and second tabs 174 a, 174 b and 176 a, 176 b of the washers 174,176 of the fastener assembly 170 are disposed adjacent the slots 180 a,180 b defined in the rail 102. To fix the second end portion 108 b, 110b of the truss arms 108, 110 in the inward position along the respectivetrack 136, 138, the fastener 178 of the fastener assembly 170 isactuated to drive an approximation of the washers 174, 176, whereby thetabs 174 a, 174 b and 176 a, 176 b of the washers 174, 176 are receivedin the corresponding slots 180 a, 180 b in the rail 102 to fix or lockthe fastener assembly 170 to the rail 102 and, in turn, lock the secondend portion 108 b of the first truss arm 108 in the inward position.

At this stage, the remaining fasteners of the mounting bracket assembly100 may be tightened to ensure that the mounting bracket assembly 100remains fixed in the expanded or in-use configuration. The PV modules 12are then secured to the rail 102 of the mounting bracket assembly 100via the coupling devices 120, 134 in the manner described above.

Yet a further aspect of the present disclosure can be seen in FIGS. 9Dand 9E. Specifically, the rail 102 may have pre-installed wiremanagement clips 162 attached to lateral sides of the rail 102. The wiremanagement clips 162 may be axially aligned with one another and spacedalong the rail 102. In other embodiments, the clips 162 may bepositioned at any suitable location on the rail 102 or other componentsof the mounting bracket assembly 100. By pre-installing the wiremanagement clips 162, installation of the solar modules 12 andelectrical connection of them is eased and made both more efficient aswell as ensuring the quality of those electrical connections by havingthe pre-installed wire management clips 162 available to the installer.

Finally, though generally described in connection with a rail 102 havinga generally C-shaped cross-section, the present disclosure is not solimited. Rather, a variety of cross-sectional shapes may be employedwithout departing from the scope of the present disclosure. For example,a high hat configuration as depicted in FIG. 10 can be employed. Thehigh-hat rail 102 is similar to the C-shaped rail, but includes twoflanges 107 a, 107 b extending perpendicularly from the channel, whichprovide further stability for the rail 102. In aspects, the flanges 107a, 107 b may extend at any suitable angle relative to the body of therail.

In embodiments, the fasteners described herein may be any suitablefastening mechanism, including, but not limited to, adhesives, hinges,clips, ties, straps, belts, tapes and/or fabric hook-and-loop fasteners.

It will be understood that various modifications may be made to theembodiments disclosed herein. Therefore, the above description shouldnot be construed as limiting, but merely as exemplifications of variousembodiments. Those skilled in the art will envision other modificationswithin the scope and spirit of the claims appended thereto.

The invention claimed is:
 1. A mounting bracket assembly, comprising: arail having a longitudinal axis; a pair of braces each having a firstend portion movably coupled to the rail, wherein the pair of braces aremovable relative to the rail between a collapsed configuration, and anexpanded configuration, in which the pair of braces cooperatively definea channel dimensioned for receipt of a frame member; and a pair of trussarms including: a first end portion movably coupled to a respectivesecond end portion of the pair of braces; and a second end portionmovably coupled to a respective first and second end portion of therail.
 2. The mounting bracket assembly according to claim 1, wherein thepair of braces are parallel with the rail in the collapsedconfiguration, and perpendicular to the rail in the expandedconfiguration.
 3. The mounting bracket assembly according to claim 1,wherein the mounting bracket assembly assumes a substantially linearshape when the pair of braces are in the collapsed configuration, andwherein the mounting bracket assembly assumes a substantially triangularshape when the pair of braces are in the expanded configuration.
 4. Themounting bracket assembly according to claim 1, further comprising afastener configured to attach to a second end portion of each of thepair of braces to fix the pair of braces in the expanded configuration.5. The mounting bracket assembly according to claim 1, wherein the pairof truss arms are configured to move relative to the rail and the pairof braces between a collapsed configuration, in which the pair of trussarms are parallel with the rail and the pair of braces, and an expandedconfiguration in which the pair of truss arms extend perpendicularlyrelative to the rail.
 6. The mounting bracket assembly according toclaim 5, wherein the second end portion of each of the pair of trussarms is configured to slide away from a central portion of the rail asthe pair of truss arms move towards the collapsed configuration.
 7. Themounting bracket assembly according to claim 5, wherein the second endportion of each of the pair of truss arms moves along the rail from aninward position, in which the pair of truss arms assumes the expandedconfiguration, toward an outward position, in which the pair of trussarms assumes the collapsed configuration.
 8. The mounting bracketassembly according to claim 5, wherein each of the first and second endportions of the rail defines a track through which the respective secondportion of the pair of truss arms slides.
 9. The mounting bracketassembly according to claim 8, further comprising a fastener assemblycoupled to the second end portion of a first truss arm of the pair oftruss arms, wherein the fastener assembly is configured to selectivelyfix the second end portion of the first truss arm in a position on thetrack of the rail.
 10. The mounting bracket assembly according to claim9, wherein the fastener assembly includes: a pair of washers disposed onopposite sides of the rail, at least a first washer of the pair ofwashers having a pair of first and second tabs extending therefrom, thepair of first and second tabs being configured for receipt in acorresponding slot defined in the rail; and a fastener coupling the pairof washers to one another and configured to adjust a distance betweenthe pair of washers.
 11. The mounting bracket assembly according toclaim 10, wherein the first washer of the fastener assembly furtherincludes a third tab extending therefrom, the third tab being disposedin the track of the rail to guide the fastener assembly through thetrack.
 12. The mounting bracket assembly according to claim 1, furthercomprising a protuberance protruding downwardly relative to an undersideof the rail, wherein the protuberance extends into the channel definedby the pair of braces when the pair of braces are in the expandedconfiguration.
 13. The mounting bracket assembly according to claim 1,wherein each of the pair of braces has a concave inner surface, suchthat the channel cooperatively defined by the first and second braceshas a circular shape.
 14. The mounting bracket assembly according toclaim 1, further comprising a plurality of coupling devices disposed onan upper side of the rail, wherein the plurality of coupling devices isconfigured to fix a solar module to the rail.
 15. A mounting bracketassembly, comprising: a rail having a longitudinal axis; and a pair ofbraces each having a first end portion movably coupled to the rail,wherein the pair of braces is movable relative to the rail between acollapsed configuration, where the pair of braces is parallel with therail, and an expanded configuration, wherein the pair of braces isperpendicular to the rail, in which the pair of braces cooperativelydefine a channel dimensioned for receipt of a frame member, wherein eachof the pair of braces has a concave inner surface, such that the channelcooperatively defined by the first and second braces has a circularshape.